Vastly simplified entity stringifying and diffing

source/engine/ffi.c

@@ -979,10 +979,10 @@ JSValue duk_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
     return num2js(js2go(argv[1])->scale);
 
   case 104:
-    return bool2js(js2go(argv[1])->flipx);
+    return bool2js(js2go(argv[1])->flipx == -1 ? 1 : 0);
 
   case 105:
-    return bool2js(js2go(argv[1])->flipy);
+    return bool2js(js2go(argv[1])->flipy == -1 ? 1 : 0);
 
   case 106:
     js2go(argv[1])->e = js2number(argv[2]);

source/engine/gameobject.c

@@ -107,7 +107,7 @@ void go_shape_moi(cpBody *body, cpShape *shape, struct gameobject *go) {
 
   moment += s->moi(s->data, go->mass);
   if (moment < 0) moment = 1;
-  cpBodySetMoment(go->body, moment);
+  cpBodySetMoment(go->body, 1);
 }
 
 void gameobject_apply(struct gameobject *go) {

source/engine/sprite.c

@@ -57,22 +57,23 @@ int make_sprite(int go) {
       .layer = 0,
       .enabled = 1};
 
+  int slot = 0;
   if (first < 0) {
     arrput(sprites, sprite);
-    arrlast(sprites).id = arrlen(sprites) - 1;
-    return arrlen(sprites) - 1;
+    slot = arrlen(sprites)-1;
   } else {
-    int slot = first;
+    slot = first;
     first = id2sprite(first)->next;
     *id2sprite(slot) = sprite;
-
-    return slot;
   }
+
+  return slot;
 }
 
 void sprite_delete(int id) {
   struct sprite *sp = id2sprite(id);
   sp->go = -1;
+  sp->enabled = 0;
   sp->next = first;
   first = id;
 }
@@ -121,6 +122,7 @@ void sprite_draw_all() {
 
   for (int i = 0; i < arrlen(sprites); i++)
     if (sprites[i].go >= 0 && sprites[i].enabled) arrpush(layers[sprites[i].layer], &sprites[i]);
+  
 
   for (int i = 4; i >= 0; i--)
     for (int j = 0; j < arrlen(layers[i]); j++)
@@ -137,8 +139,6 @@ void sprite_settex(struct sprite *sprite, struct Texture *tex) {
   sprite_setframe(sprite, &ST_UNIT);
 }
 
-
-
 void sprite_initialize() {
   shader_sprite = sg_compile_shader("shaders/spritevert.glsl", "shaders/spritefrag.glsl", &(sg_shader_desc){
       .vs.uniform_blocks[0] = {

source/engine/sprite.h

@@ -7,22 +7,20 @@
 #include "HandmadeMath.h"
 #include "render.h"
 
-
 struct datastream;
 struct gameobject;
 
 struct sprite {
-    HMM_Vec2 pos;
-    HMM_Vec2 size;
-    float rotation;
-    struct rgba color;
-    int go;
-    int id;
-    struct Texture *tex;
-    struct glrect frame;
-    int next;
-    int enabled;
-    int layer;
+  HMM_Vec2 pos;
+  HMM_Vec2 size;
+  float rotation;
+  struct rgba color;
+  int go; /* id of gameobject */
+  struct Texture *tex;
+  struct glrect frame;
+  int enabled;
+  int layer;
+  int next;
 };
 
 int make_sprite(int go);